子窗口向父窗口发送消息

1.自定义对话框中，

m_pView 是父窗口的指针

void CEx07cDialog::OnBnClickedOk(){    if (m_pView != NULL) {        // modeless case -- do not call base class OnOK        UpdateData(TRUE);         m_pView->PostMessage(WM_GOODBYE, IDOK);    }    else {        CDialog::OnOK(); // modal case    }}

2.父窗口响应

 BEGIN_MESSAGE_MAP(CEx07cView, CView) ON_WM_LBUTTONDOWN() ON_WM_RBUTTONDOWN()    ON_MESSAGE(WM_GOODBYE, OnGoodbye) //通过这个宏END_MESSAGE_MAP()

LRESULT CEx07cView::OnGoodbye(WPARAM wParam, LPARAM lParam){    // message received in response to modeless dialog OK    //  and Cancel buttons    TRACE("CEx07cView::OnGoodbye %x, %lx/n", wParam, lParam);    TRACE("Dialog edit1 contents = %s/n",           (const char*) m_pDlg->m_strEdit1);    m_pDlg->DestroyWindow();    return 0L;}